422566979 has 2 divisors, whose sum is σ = 422566980. Its totient is φ = 422566978.

The previous prime is 422566919. The next prime is 422566987. The reversal of 422566979 is 979665224.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 422566979 - 2⁸ = 422566723 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (422566919) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 211283489 + 211283490.

It is an arithmetic number, because the mean of its divisors is an integer number (211283490).

Almost surely, 2^422566979 is an apocalyptic number.

422566979 is a deficient number, since it is larger than the sum of its proper divisors (1).

422566979 is an equidigital number, since it uses as much as digits as its factorization.

422566979 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1632960, while the sum is 50.

The square root of 422566979 is about 20556.4340049533. The cubic root of 422566979 is about 750.4098376330.

The spelling of 422566979 in words is "four hundred twenty-two million, five hundred sixty-six thousand, nine hundred seventy-nine".